I'm trying to revive a HP-97 I got from a friend. I bought the cells to assemble a new pack, but I couldn't find a suitable power source. What I have is an 6 V AC x 3 watts power source, but all I can get is a big red dot on the display. I understand that this means that power is low, even if the source is connected to the unit. I wonder if 6 V is too few, maybe the 97 demands a little more. Does anyone have an idea of these power levels?
I couldn't even begin to test the rest of the calculator, but I've noticed that the card reader needs repair and I was unable to check the printer.
Thanks
To revive a HP-97
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